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define("dijit/_BidiSupport", ["./_WidgetBase"], function(_WidgetBase){
/*=====
var _WidgetBase = dijit._WidgetBase;
====*/
// module:
// dijit/_BidiSupport
// summary:
// Module that deals with BIDI, special with the auto
// direction if needed without changing the GUI direction.
// Including this module will extend _WidgetBase with BIDI related methods.
// description:
// There's a special need for displaying BIDI text in rtl direction
// in ltr GUI, sometimes needed auto support.
// In creation of widget, if it's want to activate this class,
// the widget should define the "textDir".
_WidgetBase.extend({
getTextDir: function(/*String*/ text){
// summary:
// Gets the right direction of text.
// description:
// If textDir is ltr or rtl returns the value.
// If it's auto, calls to another function that responsible
// for checking the value, and defining the direction.
// tags:
// protected.
return this.textDir == "auto" ? this._checkContextual(text) : this.textDir;
},
_checkContextual: function(text){
// summary:
// Finds the first strong (directional) character, return ltr if isLatin
// or rtl if isBidiChar.
// tags:
// private.
// look for strong (directional) characters
var fdc = /[A-Za-z\u05d0-\u065f\u066a-\u06ef\u06fa-\u07ff\ufb1d-\ufdff\ufe70-\ufefc]/.exec(text);
// if found return the direction that defined by the character, else return widgets dir as defult.
return fdc ? ( fdc[0] <= 'z' ? "ltr" : "rtl" ) : this.dir ? this.dir : this.isLeftToRight() ? "ltr" : "rtl";
},
applyTextDir: function(/*Object*/ element, /*String*/ text){
// summary:
// Set element.dir according to this.textDir
// element:
// The text element to be set. Should have dir property.
// text:
// Used in case this.textDir is "auto", for calculating the right transformation
// description:
// If textDir is ltr or rtl returns the value.
// If it's auto, calls to another function that responsible
// for checking the value, and defining the direction.
// tags:
// protected.
var textDir = this.textDir == "auto" ? this._checkContextual(text) : this.textDir;
// update only when there's a difference
if(element.dir != textDir){
element.dir = textDir;
}
}
});
return _WidgetBase;
});
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